1Ti 1:10 for the sexually immoral, for those practicing homosexuality, for slave traders and liars and perjurers--and for whatever else is contrary to the sound doctrine
1Ti 4:16 Watch your life and doctrine closely. Persevere in them, because if you do, you will save both yourself and your hearers.
2Ti 4:3 For the time will come when people will not put up with sound doctrine. Instead, to suit their own desires, they will gather around them a great number of teachers to say what their itching ears want to hear.
Tit 1:9 He must hold firmly to the trustworthy message as it has been taught, so that he can encourage others by sound doctrine and refute those who oppose it.
Tit 2:1 You, however, must teach what is appropriate to sound doctrine.